PDF (Published Version)
- Published Version
Restricted to Repository staff only

2

Abstract

In this study, polyaniline (PANI) was coated on a steel using galvanostatic technique.
The corrosion performance of the coating was studied using electrochemical techniques such as electrochemical impedance spectroscopy (EIS) and potentiodynamic polarisation in 3.5 wt. % NaCl solution. The electrochemical experiments showed that PANI coating produced using a current density of 5 mA cm-2 enhanced the corrosion resistance of the steel significantly, the corrosion current density (icorr) decreased by ~ 88 % and the polarisation resistance (RP) increased by ~ 70%. Higher current density coatings produced large pores and have deteriorated the coating performance.